Java I/O - 如何通过java.nio.file.Files获取文件大小

import java.nio.file.FileSystems;
import java.nio.file.Files;
import java.nio.file.LinkOption;
import java.nio.file.Path;

public class Main {

  public static void main(String[] args) throws Exception {
    Path path = FileSystems.getDefault().getPath("/home/docs/users.txt");
    System.out.println(Files.size(path));
  }
}